window.onload=function(){
    let male=document.getElementById("male")
    male.addEventListener("change",(e)=>{
        console.log("变动")
    })
    let female=document.getElementById("female")
    female.addEventListener("change",(e)=>{
        console.log("变动")
    })
    let city=document.querySelector("#city")
    city.addEventListener("change",(e)=>{
        console.log(e.target.value)
    })

}